From the course: AWS Administration: Security Operations

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Network ACLs

Network ACLs - Amazon Web Services (AWS) Tutorial

From the course: AWS Administration: Security Operations

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Network ACLs

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- [Instructor] A network access control list is defined as a stateless subnet firewall. It's optional control. Where we define inbound and outbound rules. We separate the allow and deny rules and the rules are processed in order. There is a default NACL which allows traffic to flow inbound and outbound unimpeded. It doesn't do anything. So if you want to have control at the subnet level, you have to enable your own custom network ACLs. The rules for your network ACL could be defined as inbound and outbound rules for the inbound rule, allow or deny for a specific traffic pattern. The outbound rule, also allow or deny, for a specified traffic pattern. Each subnet needs to be associated with a network ACL. And there is a default network ACL that's defined by default. But as we've discussed, it doesn't really protect anything. It's really just a placeholder. If we look at an example of inbound outbound rules, we can…

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